Smoking pipe cake remover



Nov. 19, 1935. A. N. LEONARD SMOKING PIPE CAKE REMOVER Filed Aug. 20,1934 Arthur N. Leonard v Inventor j Attorney Patented Nov. 19, 1935UNITED STATES PATENT OFFICE 4 Claims.

My invention relates generally to tobacco pipe reamers which are capableof eifectively removing the cake that normally forms within the bowl ofthe tobacco pipe with use and the invention 5 relates particularly tocake removers which leave a smooth and even stufac'e and not jaggedsurfaces which are made by the pipe reamers now on the market.

It is well known that tobacco leaves are composed of a number ofsubstances including pitch,

tar and natural oils and that the natural tobacco is processed before itis sold on the market as smoking tobacco. In the treating process anyone or a combination of what is known as commercial fillers is mixedwith the natural tobacco. This filler may consist of licorice, molasses,sugar or honey or other substance which is foreign to the naturaltobacco leaves. It is obvious,- therefore, that when tobacco is burnedin the bowl chamber of a tobacco pipe; there is created not only thetobacco ash but also other waste products which are normally depositedupon the inner wall of the bowl chamber. The deposited material forms arelatively fixed cake about the bowl chamber wall.

This cake is microp'orous. Consequently, the gases resulting from theburning tobacco enter into these pores. As the heat in the bowl chamberincreases this confined gas expands causing the cake to expand. It isobvious that if there is a more than normal amount of cake in the bowlchamber its expansion and contraction will be more violent and if thecake has formed itself unevenly around the chamber wall or if the cakehas been improperly reamed out, the cake and chamber wall will contractand expand unevenly. This generally results in the chipping, cracking orevenbreaking of the bowl chamber wall.

.A nominal amount of this waste material around the chamber wall servesto protect it and also gives the resulting smoke which is inhaled by thepipe smoker a somewhat delightful taste. However, if an excessive amountof this waste material is permitted to remain within the bowl 5 chamber,not only is the chamber clogged but the smoke inhaled usually has anacrid taste which is very disagreeable and possibly injurious to thedelicate membranes of the mouth and throat and is generally deleteriousto the pipe smoker. Then, too, the chemical action which in time occursin this waste material causes a very displeasing odor to emanatetherefrom.

I The primary'object of my inventionis to eliminate as many of the abovedisadvantages present in the ordinary smoking pipe as is possible and totreat and improve the bowl chamber of the pipe in order to addmaterially to the pipe smokers pleasure;

Still another object oi my invention is to remove without iniuring thewall, the impurities 5 that normally cling to the wall of the bowlchamber which, if not removed, are ordinarily inhaled with the smokecoming from the burning tobacco.

A further object of my invention is to provide 10 means whereby the cakenormally formed within the bowl chamber of a smoking pipe can be quicklyremoved with a slight amount of effort leaving a comparatively smoothand even cake surface as a wall protective and thus avoiding 15 thepossibility of the remaining cake surface to crack or peel.

An important object of my invention is to provide a smoking pipe cakeremover which permits the renewal of the abrasive upon the op- 20crating member when desired.

Still another object of my invention is to permit the inherent frictionof the abrasive member to materially assist its retention about theoperating member. 5

Another object of invention is to provide a cake remover whose contourconforms to the normal contour of the bowl chamber wall.

Another object of my invention is to provide a tobaccopipe cake removerembodying an op- 30 crating member having a removable abrasive membermounted therearound, said member and abrasive member being so arrangedthat upon insertion of the assembly into the bowl chamber of a. pipe,the abrasive member will engage 35 the wall of the bowl chamber andcreate a wedging action upon an inward boring movement of the assembly.7

An important object of my invention is to provide a smoking pipe cakeremover which is simple 40 in design and made of light, inexpensive anddurable materials which renders its construction conducive to economicand precise manufacture.

I A still further object of my invention is to provide a unitary articleof manufacture capable 4.5 of quick and effective application for theremoval of the deposited waste material in the bowl chamber.

The above and other objects and advantages will become readily apparentfrom the following 50 detailed description having reference to the formsof the invention illustrated in the accompanying drawing forming a parthereof which merely some illustrative embodiments by which the inventionmay be realized and in which like ref- 55 erence characters refer tocorresponding parts throughout the several views.

Figure 1 is an elevational view of the operating member embodying theinvention prior to placing the abrasive member about the outer surfaceof the operating member and into the slot formed therein.

Figure 2 is an elevational view of the operating member shown in Figure1 illustrating the position of the abrasive member about the outersurface of the operating member and indicating the manner of fasteningthe abrasive memberby inserting its ends into the slot. A part of theabrasive member is broken away to show that the abrasive elementoverruns the end of the operating member. 1

Figure 3 is a sectional view of the assembly shown in and taken on line3-4 of Figure 2 looking in the direction indicated which graphicallyillustrates the position of the ends of the abrasive member within theslot of the operating member.

Figure 4 is a top, plan view of the abrasive member embodying theinvention, showing the outline which is most effective for intimatelyfitting the abrasive member around the operating member. 7 V

Figure 5 is an elevational view of the assembly shown in Figure 2 and aside view of a standard tobacco pipe which is partially in section. Thisfigure graphically illustrates the position which thecake removerembodying the invention occupies when inserted within a tobacco pipe forthe purpose of removing the excessive cake' formed therein. It alsoshows a part of the abrasive'member broken away indicating that theoverrun portion thereof forms itself around the lower end of theoperating member'when pressure is applied thereto.

Figure 6 is an elevational view of a slightly modified form ofoperating'member embodying my invention showing some abrasive materialdirectly applied thereto.

Figure '7 is an elevational view of still another slightly modified formof operating member embodying my invention and showing an abrasivematerial also directly applied thereto.

" The preferred embodiment of my invention is illustrated in Figures lto 5 inclusive wherein reference character A designates, in general, themain body element; reference character B designates, in general, theabrasive member; and reference character C designates, in general, atobacco pipe of fancifuldesign illustrated merely for the purposeofshowing the manner of applying my invention thereto in order to producethe results desired. Main body element A is of a general cylindricalshape whose upper end I is formed into a holding-member, such as knob 2.

Immediately below knob 2 is formed a circumferential-groove 3 whichseparates the knob 2 from the remaining portion of the main bodyelement. The remaining portion of the main body element is shaped in theform of a frusto-cone 4. This frusto-cone 4 has a slot 5 disposedlongitudinally thereof .dividing it into substantially equal portions 6and 'I having their lower ends 8-6 rounded. The slot is not only usedfor the purpose of locking the abrasive member B relative to the mainbody element A but itadds resiliency to the frusto-cone 4, sothat it maybe.decreased incircumference under compressive stresses when appliedthereto as will hereinafter be more specifically described. The abrasivemember generally indicated by reference character B is of the generalshape indicated in Figure 4 wherein the upper-end 9 and the lowereend Iare parallel to each other and the sides H and I2 converge slightlytoward the lower-end lil. Portions of the abrasive member are out asshown at l3 and M for a purpose which will be more specificallyindivcated forthwith. The abrasive member B may have disposed thereonany abrading material ii that is' capable of grinding or wearing away byfriction the cake normally formed within atobacco pipe. Whilecrushedsteel, crushed glass or 10 emery cloth. may be used effectivelyfor the purposes desired my present practice is to use pure sand ora'combination of sand and other abrading materials placed on papercommonly known as sandpaper. Attention might well be called to the factthat the abrasive member need not be formed in the precise mannerindicated in the drawing. The upper-end 9 and the lower-end l0 might besomewhat circular in order to compensate for the conical-shape of thefrusto-cones outer surface and thereby eliminate the necessity offorming the cut-outs l3 and I4.

Figure 2 illustrates the position which the abrasive member B assumeswhen placed around the frusto-cone 4 of the main body element A. 2.5 Itshould be noticed that when the converging sides II and I2 are insertedwithin the slot 5 the. cut out portions shown at I3 and I4 allow theabrasive memberB to surround the upper end of the frusto-cone [as shownat l6l6; and that the abrasive member Bfits snugly around the outerperiphery of the main body element A (see Figure 3). This is madepossible because sides, I l and i2 converge and thereby permit theabrasive member to assume the general contour of the main body element Aand because the area of the. abrasive member B is slightly greater thanthe surface area of the frusto-cone 4. This arrangement not only permitsthe insertion of the ends H and I2 within the slot 5 and the upper-end40" 9 to overrun the upper portion of the frustocone as shown at l6l6,but it also permits the abrasive member B to overrun th e rounded-ends8-8' as shown at H. Since the surface of the abra sive member Bis'covered with an abrading-ma- 'terial l5 it is obvious that when theends I] and I2 are inserted into the slot 5, the abrading-materialprevents their premature removal because the abrading particlesinterlock with each other 7 3 and maintain a relatively fixedrelationship by friction. i The fanciful tobacco pipe shown in Figure 5-and designated by reference character C has a bowl 18 in which is formedchamber I9. Chamber l9 communicates with stem 20 by an orifice -2I whichextends therethrough. A mouth-piece overruns the rounded-ends 8-8 asshown amtll will form around and protect theends '8-8 when the assemblyis inserted into the bowl chamber of the pipe. By this arrangement anabrading surface is formed at the boring end of the assembly therebymaterially assisting in effectively and speedily removing the undesired"portionsof the cake of waste material. V

The abrasive member normally comes in the shape and form shown in Figure4. In order to secure the abrasive member around the main 16 bodyelement A, the sides H and 12 are inserted into slot 5 and the abrasivemember is then thrust upwardly until the cut out portions I3 and M areplaced ajacent the end of the slot 5. The assembly is then ready for usein removing the excessive cake formed in a tobacco pipe. When theabrading material is worn out from use another abrasive member may beplaced around the main body element A.

Figures 6 and '7 illustrate modified embodiments of the inventionwherein the abrading material i 5 is placed directly upon the outersurface of the main body element A thus dispensing with the abrasivemember B but eliminating the desired feature of renewing the abradingmateterial without altering or destroying the main body element.

It will thus be seen that there have been described several adaptatio-nsin which the several features of this invention may be attained.However, since many changes could be made in the above construction andmany different embodiments of this invention couldbe made withoutdeparting from its scope, it is intended that all matter contained inthe accompanying drawing shall be interpreted as illustrative and not ina limiting sense.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. Means for partially removing the cake secured to the wall of the bowlchamber of a tobacco pipe, comprising a body element whose contoursubstantially conforms to that of the bowl chamber, said body elementhaving a longition within the bowl chamber of a pipe, so that theabrading element will engage the wall of the bowl chamber, and saidoperating member, during the inward boring movement of the assemblybeing capable of being compressed under the wedging stresses created.

3. A smoking pipe cake remover comprising a main body element includinga knob formed at the top thereof and a substantially frusto-conicalmember formed by the major portion of the body element having a slotlongitudinally disposed therein, and an abrading element, having cut outportions and whose sides converge toward each other, adapted for beingremovably disposed about the frusto-conical portion and retained inrelatively fixed relation thereto by having its converging ends insertedinto the said slot.

4. As an article of manufacture, a tobacco pipe cake remover consistingof a substantially frustoconical body element having means to impartresiliency thereto and an abrasive member removably disposed therearoundand having its free ends inserted within the said means.

ARTHUR N. LEONARD.

